Coupling for doubletrees and swingletrees.



No. 824,063. PATENTED JUNE 19, 1906 L. BURG.

COUPLING FOR DOUBLETREES AND SWINGLETREES.

APPLICATION FILED NOV. 7, 1905. I

Z SHEETS-SHEET 1.,

1 aawenl'oz No. 824,063. PATENTED JUNE 19, 1906.

L. BURG. COUPLING FOR DOUBLETREBS A-ND SWINGLETREES.

APPLIUATION FILED NOV. 7, 1905.

2 SHEETS-SHEET 2.

amt

Wihwoom I" I 0%4 1 UNITED srArEs PATENT OFFICE.

LOUIS BURG, or; DALLAS: eirna nvo s.

s COUPLING :FOR" DOUBLETREESAND;YSWII\N,G\I,ETREE.

No..s24,0es.

- Specification. of Letters Patent.

gnpplieation filed. November 7, 1905. Serial No; 286,198.

To M whom it may concern/.- I Beit k'nown thatI, LOUIS BURG, a citizen of the United States, residing at Dallas City, in the .county of Henderson'andstate of 'Illinois, have inventednew and useful Improvemanner of mounting the same andfit contemplates coupling a doubletreeand swingletrees to theiriisupports in such manner that lia-' bility of the trees splitting is. reduced .to a minimum, and at the-same time the trees are prevented from tilting forwardly and are also prevented from pulling away from their supports even when their pivot-bolts arebroken or displaced.

Other advantageous features peculiar to my invention willbe fully understood from the following description and claims when taken in connection with the accom anying drawings, forming part of this speci cation, inwhic Figure 1 is a perspective view of a carriage or, wagon pole equip ed with a doubletree .and swmgletrees coup ed in accordance with my invention. Fig. 2 is an enlarged detail view, partly in elevationand partly [in section, illustrating the coupling between the doubletree and the pole. Fig. 2 is adetail diametrical section illustrating the connection of the eye of the hammer-strap to the yoke straddling the doubletree.

enlarged detail top plan view of. one of the couplings effecting connection of the swingletrees to the doubletree. Fig.4,is a transverse section of the same, taken in the plane indicatedybytheline 4 of Fig. 3.

Fig. 5 is s a top plan viewof the maj ryoke, which I prefer to employ. in each of the swingletreecouplings as such yoke appears precedent .to beingbent into U shape. Fig. 6 is a similar view of one of the minoryokes of the swinglee tree-couplings, and Fig. 7 is a topplan view of theflower weareplate of the swingletree coupling.

Similar letters designate corresponding.

parts in 'all of the views of the drawings, referring to which i v A is a carriage, or wagon pole.

B is, ametallic hammer-strap connected to th fl 'PO E Q I of thepqle a dreachi gfo wardly from its point of connection and ter-.

minat g in n eye Fig. 3 is. an

posed at right angles to the pole, and-.D D are swingletrees carried by the doubletree.-

trees are of-woodand, generally speaking, are constructed in the ordinary well-known manner.

,EfFig. 2, is a wear-platedisposedon the upper side of the poleA and having a cen' @tral aperture 1) t and 7 also: having apertured lugs c. F is a yoke straddling the ole-A and having the ends of its legs secured'b ,fotherwisej in the, apertured lugs of the said .iwear-plate-E.

Gisa wear-plate superposed on the wearplateE and having a central aperture and a circular depending flanged, surrounding said i erture and ournaled in the apertureb of H is a yoke dis osed at n ht angles to.:the {yoke F andstra dling the" oubletree C and ,having its ends secured in the lugs e of the erture f and a raised flange g, surroundingt e ;same, and I is apivot-bolt extending through the eye a of; the hammer-strap B, which eye 5a surrounds the raisedflange g of the yoke H gand also extends through the said yoke H, ,the doubletree C, the-wear-plate G, the 0 posed wear-plate E, the pole A, andlthe yo e F in the order named and secured below the latter yoke by a-. nut, as shown, or other means suitable to the pur ose. I The parts just descri ed constitute the coupgling for. effecting connection of the f, dou letree to the pole, and it willbe apparent that the saidcoup ing permits free hor zontal movement. of the "doubletree on :the pole withoutfriction'al wear of either and'yet pre eludes forward tilting of the doubletreein use, which is an important desideratum; "The fhammer-strap B engaging the upper yoke H i Figs. 1 and 2, obviously contributes materially in I preventing forward tilting of the doubletree and taking strain off the pivot-bolt I. It will also be a parent that the arrangement of the flange ri of the upper wear-plate Gin the aperture t of the lower wear-plate E assistsintakin strain oif the pivot-bolt, and it ,will further, e apparent that the connection of the lower wearlate E, andtheupper respectively, does not entail the employment ofj .wood screws. or the like penetrating "the C is a doubletree arranged above andd-i's The pole, the doubletree and the swingle-"w y1nuts ort e wear-plate-E and also havingapertured;

wear-plate G, and also having a central, a

i in the manner described, and best shown-in.

wear-,plate G'tothe'po e A, andgdoubletree 'G,"

I Patented June 19, 1906. v i

IIO

pole and the doubletree, which screws are very objectionable, inasmuch as they tend to weaken the ole and the doubletree and are liable to wor loose as well as cause the pole and doubletree to split after a short period of use.

The couplings for connecting the swingletrees D to the doubletree C are identical in construction, and for this reason a detailed description of the single coupling shown in Figs. 3 to 7 of the drawings Will sufiice to impart a definite understanding ofboth swingle tree-couplings. The said coupling, Figs. 3 to 7, comprises a lower wear-plate m, disposed on the doubletree and having a central aperture n and also having apertured lugs 10; a yoke g straddling the doubletree and having its ends secured by nuts or other means in the lugs of the plate m; an upper wear-plate 1", arranged on the plate m and below the swingletree D and having a central a erture s and a depending flange t, surroun ing said aperture and journaled in the aperture n of the plate m, and also having apertured lugs u; a yoke v straddling the swingletree and having its ends secured in the lugs a of the upper Wear-plate, and also having a central aperture w and a raised flange ac surrounding the same; a major yoke M having a central aperture y and a socket z in its under side receiving the raised flange 0c of the yoke v, and also having divergent legs a; a headed ivot-bolt N extendin through the major yo e M, the minor yoke '0, the swingletree D the upper wear-plate r, the lower wear-plate m, the double tree C and the minor yoke g in the order named and secured below the latter yoke by a nut or other suitable means, and transverse bolts P extending through the legs of the major yoke M and the doubletree C and fixedly connecting the former to the latter. I prefer to provide the major yoke M with diverging legs, (best shown in Figs. 3 and 5,) because said yoke is then fixedly connected to the doubletree C at opposite sides of the vertical plane of the pivot-bolt, which obviously contributes materially to the strength and durability of the coupling. I do not desire, however, to be understood as confining myself to making the major yoke with divergent legs, as the said i yoke may be made with but two legs, one at either side of the swingletree, without involving' a departure from the scope of my invention.

It will be gathered from the foregoing that the couplings connecting the swingletrees and the doubletree do not entail the use of wood-screws or other means calculated to weaken the doubletree and swingletrees or split the same. On the other hand, it will be apparent that the wear-plates of the coupling preclude frictional wear of the doubletree and swingletrees and in connection with the minor yokes materially reinforce and strengthen the doubletree and swingletrees, so that while the swingletrees are free to turn or swing horizontally on the doubletree there is no liability of the doubletree or swingletrees splitting in practice. Moreover, it will be observed that the pivot-bolt N is prevented from wearing large holes in the doubletree and swingletree, and forward tiltin of the swingletree on the doubletree, as wefi as casual disconnection of the former from the latter, is precluded. This latter is due to the major yoke M, for it will be seen that even if the pivot-bolt is broken or displaced the yoke M will effectually prevent forward tilting of the swingletree or pulling of the same away from the doubletree.

In addition to the practical advantages which I have hereinbefore ascribed to my improvements the same are simple and inexpensive and do not add materially to the cost of a carriage or wagon pole and its appurtenances or render the same cumbersome and unsightly in appearance.

While I have shown and described the swingletrees as coupled to a doubletree, I desire it distinctly understood that my novel coupling may be used to advantage in connecting a swingletree to any suitable support other than a doubletree.

Having described my invention, what I claim, and desire to secure by Letters Patent, is

1. The combination of a su port, a swin ing tree, a pivot-bolt extending vertically through and connecting the support and the tree opposed wear-plates interposed between the support and the tree and having central apertures receiving the pivot-bolt and apertured lugs extending beyond the support and the tree, respectively one of said wear-plates also having a central portion journaled in the other wear-plate, a yoke straddling the support and having integral arms which terminate in threaded portions extending through the apertured lugs of the adjacent wearplate, nuts mounted on said threaded portions, a yoke straddling the tree and havin integral arms which terminate in threaded portions extending through the apertured ugs of the adjacent wear-plate, and nuts mounted on said threaded portions.

2. The combination of a support, a swinging tree, a pivot-bolt extending vertically through and connecting the support and the tree, opposed wear-plates interposed between the support and the tree and having central apertures receiving the pivot-bolt and apertured lugs extending beyond the support and the tree, respectively; one of said wear-plates also having a central portion ournaled in the other wear-plate, a yoke straddling the support and having integral arms which terminate in threaded portions extending through the apertured lugs of the adjacent wearplate, nuts mounted on said threaded portions, a oke straddling the tree and having a raised ange on its upper side, around the pivot-bolt and also having integral arms which terminate in threaded portions extending through the apertured lugs of the adjacent Wear-plate, nuts mounted on said threaded portions, a major yoke disposed at right angles to the tree and the support and having a recess in the under side of its top receiving the raised flange of the upper yoke and an aperture in said .top receiving the pivot-bolt and also having diverging, a ertured legs, and transverse bolts exten ing through and connecting said apertured legs and the support.

In testimony-whereof I have hereunto, set my hand in presence of two subscribing Wit- IlBSSGS. i I

J LOUIS BURG.

Witnesses:

O. G. O AMBERG, HERBERT L. JACKSON. 

